The International L150 uses a 198 bulb size for both front and rear turn signal applications. This replacement chart covers 1950 to 1952 vehicle production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International L150 uses the 198 bulb for both front and rear turn signals across the 1950-1952 model years.
The 198 is classified under the ANSI standard, meaning it conforms to the American National Standards Institute specifications recognized in the United States and Canada.
The 198 bulb is a miniature wedge type, designated T5, which refers to its tubular shape with a width of 5/8 of an inch.
A wedge base bulb relies on the tension of its glass pinch base to make electrical contact, rather than using a separate metal cap or bayonet fitting.
The 198 bulb operates at 12 volts, consistent with the standard automotive electrical systems of the era.
At 2 watts, the 198 bulb draws very low current, placing it among the lower-output bulbs used in automotive signaling applications.
The front and rear turn signal positions on the International L150 share the same bulb specification across all listed model years, indicating a uniform fitment requirement for both positions.